20470840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39367}}^1$

素因数の和:39391

約数の個数: 32

約数和(自身を含む): 49603680

約数和(自身を除く): 29132840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 39367, 78734, 157468, 196835, 314936, 393670, 511771, 787340, 1023542, 1574680, 2047084, 2558855, 4094168, 5117710, 10235420, 20470840]

約数ペア:

[(1, 20470840), (2, 10235420), (4, 5117710), (5, 4094168), (8, 2558855), (10, 2047084), (13, 1574680), (20, 1023542), (26, 787340), (40, 511771), (52, 393670), (65, 314936), (104, 196835), (130, 157468), (260, 78734), (520, 39367)]